Harrow.



l 110.741,43?. PATBNTED 011113,1903.

' 11.11111'LBY.

APPLIoATfIoN FILED SEPT. 19, 1902.

N0 MODEL.

A TTOHNE YS.

No. 741,487. A

UNITED STATES` Patented october 13, 190e?I PATENT GEEICE.

- HARRow.

SPECIFICATION forming part of Letters Patent No. 741,487, dated October13, 1903. Application tiled September 19, 1902. Serial No. 124,005. (Nomodel.)

To all wit/0m it may concern:

Be it known that I, HERBERT HALEY, a

' subject of the King of Great Britain, and a resident of GreatWymondley, near Hitchin, in the county of Herts,England,have invented anew and Improved Harrow, of which the followingis a full,clear, andexact description.

My invention relates to harrows, my object more particularly being toproduce a harrow which is Iiexiblerelatively to the ground and providedwith brush-teeth of different lengths and with adjustments forgovanother member thereof.

erningthe relative positions of different parts of the framework of themachine.

Reference is to be had to the accompanying drawings, forming a part ofthis specication, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a plan view of my harrow, partly broken away and in section.Fig. 2 is an enlarged fragmentary elevation, showingparts of thcframework and also showing the brushteeth. Figs. 3, 4, 5,v and 7 areenlarged sections ot modified forms of the frame, showing modified formsof brushes connected therewith; and Fig. 6 is a fragmentary elevation ofthe construction shown in Fig. 5.

Pivoted upon the clevis 1 are the longitudinal beams 2 3. The outer orfree ends of these beams are provided with plates 4 5, connectedtogether by pivots 6 7, upon which the longitudinal beams 8 9 arejournaled, as indicated in Fig. 1. A rod 10 and tube 12 are pivoted,respectively, upon the bearings 11 and 13 and are connectedtelescopically together. By means of the set-screw 14 th'e rod and tubeare adjustable relatively to each other for the purpose of governing therelative position occupied by the members 2 and 8, constitutingonemember of the frame, and the longitudinal beams 3 and 9, constitutingThe beams 3 and 9 are exible relatively to each other, so as to form twovariations lin the level of the ground over which the harrow is dragged.Similarly the beams 2 and 8 are flexible relatively to each other, thepivot 6 acting as a i bearing.

may be removed.

In Fig. 3 is shown a modification in the form of beam used. The beam 18has they shape indicated in cross-section in Fig. 3, being provided withlongitudinal channels 19 and'20. The wires are bent into U form, as

`shown at 21 22, and are held in place by means of longitudinal strips23 24, these strips being secured together by bolts 25. If desired, the

beam may have the crosssectional form indicated at 26 in Fig. 4, theU-shaped wires 27 28 being held in position by means of me tallic strips29 30.

If desired, the beams may be of composite structure, made of two parts31 32, the wires 33 34 being of hair-pin shape, as indicated in Fig. 5,the bends in the wire being placed within a cavity 35 between` the parts31 and 32, the latter being held together by means of bolts 36. `Ifdesired, the beams may each have the form of a tube 39, surmounted by asaddle 37 and pierced by bolts 40, as indicated in Fig.' 7. In this casethe brushes 38 are substantially of hair-pin shape, with the pointscrossed, as indicated in Fig. 7.

VThe brushes are adjustable by means of collars made in substantiallysemicylindrical halves 14, held together by bolts 14d or by plates 34,held together by bolts 14h. The bolts are loosened, the adjustingmembers elevated or lowered to the desired point, and the'boltstightened. By this means any desired degree of are may bevgiven to thebrushes.

When the brushes are arranged as indi cated in Figs. 5, 6, and 7, eachwire constitutes a distinct brush, there being only two wires in abunch. l

The arrangement of the bunches of wire is such that when the frame isturned upon one side the ground is engaged'by brushes of ,one ilength-fsay 14b (shown in Fig. 2)--and when the frame is turned over theground is engaged by brushes of a different length--say 141 in the samefigure. In :other words, by turning the implement upside down a stierset of wires will be presented to the soil.

IOO

The beams 2, 8, 3, and 9 are preferably made interchangeable and soarranged that the curvature given to the wires by use may be correctedby so disposing the wires that the strain will be in a differentdirection, thus bending the wires back into their normal positions-thatis to say, any distortion in the shape of a brush may be corrected bybending the brush in the opposite direction while the harrow is in use.

Having thus described my invention, I claim as new and desire to secureby Letters Patent-- 1. A harrow comprising a composite frame built up ofseparate beams flexibly connected together and free to move relativelyto each other, and a plurality of brushes made of spring-wires and oftwo different lengths, the brushes of one length being free to engagethe ground when said frame occupies a certain predetermined positionrelative to the ground7 and the brushes of the other length being freeto engage the ground when said frame occupies another position relativeto the ground.

2. A harrow comprising a composite frame built up of separate membersflexibly connected together and free to move relatively to each other,means controllable at will for adjusting said members relatively to eachother, a plurality of brushes made of springwires and of two diierentlengths, the brushes of one length being free to engage the ground whensaid frame occupies a certain predetermined position relative to theground, and the brushes of the other length being free to engage theground when said frame occupies another position relative to the ground.

3. A harrow comprising a composite frame built up of longitudinal beamspivotally connected together and arranged substantially in a V shape, aclevis pivotally connected with the terminal beams, a telescopicadjustment for governing the relative position of said beams, and aplurality of brushes of spring-wire detachably secured to said beams.

4E. In a harrow, a frame made of members provided with spring-wireteeth, divers of said teeth immediately adjacent to each other being sodisposed as to normally flare asunder, and two-part clamping mechanismadjustably mounted upon said teeth and provided with bolts for drawingsaid teeth toward each other.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HERBERT IIAILE Y.

Witnesses: A RICHARD WEs'rAoo'rT, FRANCIS W. FRIGoU'r.

